CN219254147U - Waterproof dustproof structure of inverted electric spindle - Google Patents
Waterproof dustproof structure of inverted electric spindle Download PDFInfo
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- CN219254147U CN219254147U CN202320210493.6U CN202320210493U CN219254147U CN 219254147 U CN219254147 U CN 219254147U CN 202320210493 U CN202320210493 U CN 202320210493U CN 219254147 U CN219254147 U CN 219254147U
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Abstract
The utility model discloses a waterproof and dustproof structure of an inverted electric spindle, which is arranged at one end of an electric spindle, can be penetrated by the end part of one end of a spindle mounting cutter of the electric spindle, and comprises the following components: a top cover, an end cover and an air sealing ring; the end, close to the cutter, of the top cover is provided with a head part, the outer edge, close to one side of the cutter, of the head part is provided with a taper, the end, far away from the cutter, of the top cover is provided with a threaded installation part, the installation part is fixedly connected with the end cover through threads, the head part and the end cover enclose a labyrinth sealing structure, and the installation part and the end cover enclose an installation groove for accommodating the air sealing ring; the end cover is fixedly connected with the electric spindle and is provided with an end cover air passage through which air can be introduced; the air seal ring is arranged in the mounting groove, a plurality of air distribution holes distributed in a circular array around the axis of the air seal ring are arranged on the air seal ring, the air distribution holes are communicated with the air passage of the end cover, and a gap is reserved between the air seal ring and the mounting part. The problem of current upright electric main shaft waterproof, dustproof effect is not good in the use is overcome.
Description
Technical Field
The utility model relates to the field of motorized spindles, in particular to a waterproof and dustproof structure of an inverted motorized spindle.
Background
The main shaft is along setting up the lathe that sets up, and the work piece drill way in the processing is upwards, and the clearance of chip removal is very difficult, and downthehole accumulated bits is serious, and to blind hole part, the cutter chip removal becomes more difficult, influences the normal processing of lathe, has the risk of breaking sword waste part. When the main shaft is arranged in an inverted mode, the hole machining tool can machine a workpiece below the workpiece, the tool chip removal cleaning effect is good, the interference and influence of scrap iron on machining are small, and the problem that the tool chip removal of the traditional main shaft is poor in the vertical machine tool is solved.
The electric spindle has the advantages of high mechanical efficiency, extremely high rotation speed, high rotation precision, low noise, small vibration and the like, and is widely applied to numerical control machine tools. Compared with an electric spindle arranged in a vertical way, cutting fluid, scrap iron, impurities and the like are easier to invade the inside of the electric spindle arranged in an inverted way, so that the electric spindle is damaged, the service life of the electric spindle is influenced, and therefore the working condition has stricter requirements on the sealing of the electric spindle, and the existing inverted electric spindle is poor in waterproof and dustproof effects in the use process.
Disclosure of Invention
The utility model provides a waterproof and dustproof structure of an inverted electric spindle, which aims to solve the problem that the existing inverted electric spindle is poor in waterproof and dustproof effects in the using process.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
an inverted waterproof and dustproof structure of an electric spindle, which is arranged at one end of an electric spindle mounting tool and can be penetrated by the end part of one end of a spindle mounting tool of the electric spindle, comprises: a top cover, an end cover and an air sealing ring;
the end, close to the cutter, of the top cover is provided with a head, the outer edge, close to one side of the cutter, of the head is provided with a taper, the end, far away from the cutter, of the top cover is provided with a threaded mounting part, the mounting part is fixedly connected with the end cover through threads, the head and the end cover enclose a labyrinth sealing structure, and the mounting part and the end cover enclose a mounting groove for accommodating an air sealing ring;
the end cover is fixedly connected with the electric spindle and is provided with an end cover air passage through which gas can be introduced;
the air seal ring is arranged in the mounting groove, a plurality of air distribution holes distributed in a circular array around the axis of the air seal ring are formed in the air seal ring, the air distribution holes are communicated with the air passage of the end cover, and a gap is reserved between the air seal ring and the mounting part.
Further, one end of the air sealing ring, which is close to the top cover, is an air outlet end, one end of the air distributing hole, which is close to the periphery of the air sealing ring, is an air inlet, and one end of the air distributing hole, which is far away from the periphery of the air sealing ring, is an air outlet;
the included angle between the axis of the air dividing hole and the radial section where the diameter of the air sealing ring passing through the center of the air outlet at the corresponding position is located is a first acute angle, and the opening of the first acute angle faces the air outlet end.
Further, an included angle between the axis of the air distribution hole and an axial section where the diameter of the air sealing ring passing through the center of the air outlet at the corresponding position is located is a second acute angle.
Further, the periphery of the air seal ring is provided with an annular air inlet groove, and the air inlet groove is connected with a central hole of the air seal ring through an air distribution hole.
Furthermore, the head is provided with an annular labyrinth seal groove, the end cover is provided with a labyrinth seal lug matched with the labyrinth seal groove, at least one circle of lug grooves are carved on the periphery of the labyrinth seal lug, and the labyrinth seal groove and the labyrinth seal lug form a labyrinth seal structure.
Furthermore, an end cover chamfer is arranged on the outer edge of one side of the end cover, which is close to the head.
Further, the inner wall of the top cover is provided with a sealing ring mounting groove, and the sealing ring mounting groove is used for mounting a sealing ring.
Further, the end part of the mounting part far away from one end of the head is provided with a truncated cone-shaped guide part, and the upper bottom surface of the truncated cone is far away from the head.
The utility model has the beneficial effects that:
the outer edge of the head part of the top cover, which is close to one side of the cutter, is provided with taper, so that scrap iron generated in the processing process can not be accumulated, and the cleaning is convenient; the head and the end cover enclose a labyrinth sealing structure, and a sealing effect is achieved between the top cover and the end cover;
the rotor in the electric spindle can lead to inside production negative pressure in the high-speed operation process of electric spindle, pollutants such as cutting fluid, iron fillings, impurity are very easy to be inhaled in the labyrinth seal structure under the negative pressure air current effect, consequently, be equipped with the end cover air flue that can let in gas on the end cover, be equipped with the minute pore of circular array distribution on the gas seal ring, minute pore intercommunication end cover air flue, gas evenly spouts to the clearance between gas seal ring and the installation department from the minute pore on the gas seal ring of end cover air flue flow through, discharge in the clearance of labyrinth seal structure again, avoid causing the pollutant to inhale in the labyrinth seal structure because of the air current that the negative pressure produced, play dustproof dust removal's purpose simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural view of an inverted motorized spindle waterproof and dustproof structure mounted on a spindle;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view of a top cover of an inverted motorized spindle waterproof and dustproof structure of the present disclosure;
FIG. 4 is a cross-sectional view of an end cap of an inverted motorized spindle waterproof and dustproof structure of the present disclosure;
fig. 5 is a schematic structural view of an air sealing ring of an inverted motorized spindle waterproof and dustproof structure disclosed by the utility model;
FIG. 6 is a cross-sectional view of an air seal ring of an inverted motorized spindle waterproof and dustproof structure of the present disclosure;
FIG. 7 is a top view of an air seal ring of an inverted motorized spindle waterproof and dustproof structure of the present disclosure;
in the figure: 1. a top cover; 11. a head; 12. a mounting part; 121. a guide part; 13. labyrinth seal grooves; 14. a seal ring mounting groove; 2. an end cap; 21. labyrinth seal projections; 211. a bump groove; 22. a threaded mounting hole; 23. a receiving hole; 24. chamfering an end cover; 25. an end cap airway; 3. a gas seal ring; 31. an air inlet groove; 32. an air dividing hole; 33. a central bore; 3A, an air outlet end; B. a mandrel; C. a spindle housing;
c1, a main shaft shell air passage; D. a cutter; alpha, a second acute angle; beta, a first acute angle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment provides an inverted waterproof and dustproof structure of an electric spindle, as shown in fig. 1 to 7, which is disposed at one end of an electric spindle mounting tool D and can be penetrated by an end of one end of a spindle B mounting tool D of the electric spindle, as shown in fig. 2, and includes: top cap 1, end cap 2 and gas seal ring 3;
as shown in fig. 3, a head 11 is arranged on one side of the top cover 1 close to the cutter a, a taper is formed on the outer edge of one side of the head 11 close to the cutter a, a threaded mounting part 12 is arranged on one side of the top cover 1 far away from the cutter a, as shown in fig. 4, a threaded mounting hole 22 and a containing hole 23 which are sequentially communicated are formed in the end cover 2, the mounting part 12 is fixedly connected with the threaded mounting hole 22 of the end cover 2 through threads, the head 11 and the end cover 2 enclose a labyrinth sealing structure, and the mounting part 12 and the containing hole 23 of the end cover 2 enclose a mounting groove for containing the air sealing ring 3;
as shown in fig. 2, the end cover 2 is fixedly connected with a spindle housing C of the electric spindle through bolts, and as shown in fig. 4, the end cover 2 is provided with an end cover air passage 25 through which air can be introduced;
the air seal ring 3 is arranged in the mounting groove, a plurality of air distribution holes 32 distributed in a circular array around the axis of the air seal ring 3 are arranged on the air seal ring 3, the air distribution holes 32 are communicated with the end cover air passage 25, and a gap is reserved between the air seal ring 3 and the mounting part 12;
the outer edge of the head 11 of the top cover 1, which is close to one side of the cutter, is provided with taper, so that scrap iron generated in the processing process can not be accumulated, and the cleaning is convenient;
the head 1 and the end cover 2 enclose a labyrinth sealing structure, and a sealing effect is achieved between the top cover 1 and the end cover 2;
the rotor in the electric spindle can cause negative pressure in the electric spindle in the high-speed running process, and pollutants such as cutting fluid, scrap iron, impurities and the like are very easy to be sucked into the labyrinth seal structure under the action of negative pressure air flow, so that the end cover 2 is provided with the end cover air flue 25 capable of introducing air, the air seal ring 3 is provided with the air holes 32 distributed in a circular array, the air holes 32 are communicated with the end cover air flue 25, the air flows through the air holes 32 on the air seal ring 3 from the end cover air flue 25 to be uniformly sprayed to a gap between the air seal ring 3 and the mounting part 12, and then is discharged from the gap of the labyrinth seal structure, so that the pollutants are prevented from being sucked into the labyrinth seal structure due to the air flow generated by the negative pressure, and the aim of dust prevention and dust removal is fulfilled.
In a specific embodiment, as shown in fig. 6, an air outlet end 3A is at one end of the airtight ring 3 close to the top cover 1, an air inlet is at one end of the air-distributing hole 32 close to the outer periphery of the airtight ring 3, and an air outlet is at one end of the air-distributing hole 32 far from the outer periphery of the airtight ring 3;
the included angle between the axis of the air distribution hole 32 and the radial section of the air sealing ring 3 passing through the center of the air outlet at the corresponding position is a first acute angle beta, and the opening of the first acute angle beta faces the air outlet end 3A;
under the action of the first acute angle beta, the gas does not directly and vertically impact the mounting part 12 adjacent to the air sealing ring 3 any more, but flows to the air outlet end 3A after contacting the mounting part 12 at a certain angle, the air distribution holes 32 guide the air flow, and the turbulence vortex is restrained from being generated in the inverted electric spindle waterproof and dustproof structure disclosed by the embodiment, so that larger noise caused by vibration generated by the turbulence vortex is avoided, and meanwhile, the pressure loss generated by the vertical impact of the gas on the mounting part 12 is reduced, so that operators do not need to greatly improve the pressure of the introduced gas to compensate the pressure loss.
Preferably, the angle of the first acute angle β is 70 °, and the air-distributing hole 32 has the best air-guiding effect.
In a specific embodiment, as shown in fig. 7, an included angle between the axis of the air-distributing hole 32 and the axial section where the diameter of the air-tight ring 3 passing through the center of the air outlet at the corresponding position is located is a second acute angle α, and in the process that the air passes through the air-tight ring 3, the air flows rotationally under the combined action of the second acute angle α and the first acute angle β, so that the formed circulating air can be uniformly sprayed to the periphery of the mounting portion 12 without dead angles, then flows to the air-outlet end 3A, and is discharged from the gap of the labyrinth seal structure.
In a specific embodiment, as shown in fig. 5, an annular air inlet groove 31 is formed on the periphery of the air seal ring 3, and the air inlet groove 31 is connected with a central hole 33 of the air seal ring 3 through an air distribution hole 32;
in actual use, as shown in fig. 2, the spindle housing C of the electric spindle is provided with a spindle housing air channel C1, compressed gas flows into the end cover air channel 25 from the spindle housing air channel C1, flows into the air inlet groove 31 from the end cover air channel 25, is buffered in the air inlet groove 31, flows into the air distribution holes 32 after filling the air inlet groove 31, ensures that the gas can be uniformly distributed to the air distribution holes 32, passes through the air distribution holes 32 and is uniformly sprayed to a gap between the central hole 33 of the air seal ring 3 and the mounting part 12, flows to the air outlet end 3A, and is discharged to the atmosphere from a gap of the labyrinth seal structure.
In a specific embodiment, the head 11 is provided with an annular labyrinth seal groove 13, the end cover 2 is provided with a labyrinth seal lug 21 matched with the labyrinth seal groove 13, at least one circle of lug grooves 211 are carved on the periphery of the labyrinth seal lug 21, and the labyrinth seal groove 13 and the labyrinth seal lug 21 form a labyrinth seal structure.
In a specific embodiment, as shown in fig. 4, an end cover chamfer 24 is provided on the outer edge of the end cover 2 near the head 11, and the end cover chamfer 24 prevents accumulation of pollutants such as scrap iron, impurities and the like.
In a specific embodiment, as shown in fig. 3, a seal ring mounting groove 14 is provided on the inner wall of the top cover 1, and the seal ring mounting groove 14 is used for mounting a seal ring, so as to improve tightness and prevent cutting fluid from entering the electric spindle.
In a specific embodiment, as shown in fig. 3, the end of the mounting portion 12 away from one end of the head 11 is provided with a guiding portion 121 in a shape of a truncated cone, and the upper bottom surface of the truncated cone is away from the head 11, and the guiding portion 121 can facilitate the installer to mount the top cover 1.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. The utility model provides an waterproof dustproof construction of handstand formula motorized spindle, sets up in the one end of motorized spindle installation cutter, can be run through by the tip of the dabber installation cutter one end of motorized spindle, its characterized in that includes: a top cover (1), an end cover (2) and an air sealing ring (3);
the novel gas seal ring is characterized in that one end of the top cover (1) close to the cutter is provided with a head (11), the outer edge of one side of the head (11) close to the cutter is provided with a taper, one end of the top cover (1) far away from the cutter is provided with a threaded mounting part (12), the mounting part (12) is fixedly connected with the end cover (2) through threads, the head (11) and the end cover (2) enclose a labyrinth seal structure, and the mounting part (12) and the end cover (2) enclose a mounting groove for accommodating the gas seal ring (3);
the end cover (2) is fixedly connected with the motorized spindle, and the end cover (2) is provided with an end cover air passage (25) capable of introducing air;
the air seal ring (3) is arranged in the mounting groove, a plurality of air distribution holes (32) which are distributed around the axis of the air seal ring (3) in a circular array are formed in the air seal ring (3), the air distribution holes (32) are communicated with the end cover air passage (25), and a gap is reserved between the air seal ring (3) and the mounting part (12).
2. The waterproof and dustproof structure of the inverted motorized spindle according to claim 1, wherein one end of the airtight ring (3) close to the top cover (1) is an air outlet end, one end of the air distribution hole (32) close to the periphery of the airtight ring (3) is an air inlet, and one end of the air distribution hole (32) far from the periphery of the airtight ring (3) is an air outlet;
the included angle between the axis of the air distribution hole (32) and the radial section of the air sealing ring (3) passing through the center of the air outlet at the corresponding position is a first acute angle, and the opening of the first acute angle faces the air outlet end.
3. The waterproof and dustproof structure of the inverted motorized spindle according to claim 2, wherein an included angle between the axis of the air distribution hole (32) and an axial section where the diameter of the air sealing ring (3) passing through the center of the air outlet at the corresponding position is located is a second acute angle.
4. The waterproof and dustproof structure of the inverted motorized spindle according to claim 1, wherein an annular air inlet groove (31) is formed in the periphery of the air sealing ring (3), and the air inlet groove (31) is connected with a central hole of the air sealing ring (3) through an air distribution hole (32).
5. The inverted motorized spindle waterproof and dustproof structure according to claim 1, wherein the head (11) is provided with an annular labyrinth seal groove (13), the end cover (2) is provided with a labyrinth seal lug (21) matched with the labyrinth seal groove (13), at least one circle of lug grooves (211) are engraved on the periphery of the labyrinth seal lug (21), and the labyrinth seal groove (13) and the labyrinth seal lug (21) form the labyrinth seal structure.
6. The waterproof and dustproof structure of the inverted motorized spindle according to claim 1, wherein an end cover chamfer (24) is arranged on the outer edge of one side of the end cover (2) close to the head (11).
7. The waterproof and dustproof structure of the inverted motorized spindle according to claim 1, wherein a sealing ring mounting groove (14) is formed in the inner wall of the top cover (1), and the sealing ring mounting groove (14) is used for mounting a sealing ring.
8. The waterproof and dustproof structure of the inverted motorized spindle according to claim 1, wherein a truncated cone-shaped guide part (121) is arranged at the end of the mounting part (12) far away from one end of the head part (11), and the upper bottom surface of the truncated cone is far away from the head part (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320210493.6U CN219254147U (en) | 2023-02-14 | 2023-02-14 | Waterproof dustproof structure of inverted electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320210493.6U CN219254147U (en) | 2023-02-14 | 2023-02-14 | Waterproof dustproof structure of inverted electric spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219254147U true CN219254147U (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320210493.6U Active CN219254147U (en) | 2023-02-14 | 2023-02-14 | Waterproof dustproof structure of inverted electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219254147U (en) |
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2023
- 2023-02-14 CN CN202320210493.6U patent/CN219254147U/en active Active
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